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` (No Moden J. B. RIVERA.

CONFEUTION GRINDING APPARATUS.

No. 288.860. Patented Nov. 20,'1883.

i Ni'rnn STATES u ATEN'r B. RIVERA, OF BALTIMORE, MARYLAND.

co FEcToN-GR oNG APPARATUS.

SPECIFICATION frining part of Letters Patent No. zsaseo, dated November 20, 1883.

Application filed May 3, 1863. (No model.) i

kernels of almonds, cocoa, cocoanuts, and the.

meat-s or nutritious parts of other fruits, and adapting them for use as ingredients of coufections and other analogous articles; and my invention consists in certain features of construction, combinations of parts, and arrangements of rolls driven at relatively different speeds, as hereinafter described, and specifically setforth in the claims.

Referring to the accompanying drawings, forning a part hereof, Figure l is a central vertical section of an apparatus constructed for the aforesaid purpose and in accordance with my invention. Fig. 2 is a front elevation of the same, partly in sectiomand with the rollerscrapers removed. Fig. 3 is aside elevation, showing the arrangement of the train of operating-gears; and Fig. 4: a section on a larger scale, showing details 'of construction.

Like letters indicate like parts in all the figures.

A represents a hopper supported in aframe,

A', Secured by means of swiveLbolts a upon a framework, A which is secured to a box or trough, A, as clearly shown. In the hopper-. bottom are two feed-rolls B and C, having their peripheries 'provided with diamondshaped projections by means of longitudinal and circumferential grooves cut thereon. These rolls are arranged to form an inclined plane, and in such relation to the bottom and end walls of the hopper that substances placed therein are by gravity fed toward the roll revolving at the highest speed, and thus made to enter between said rolls, even when using such substances as cocoanut in large fragments. The rolls B and C are mounted on shafts B' O', mounted in the frame A', and provided with gears :8 C respectively, at opposite sides of the machine. In the frame A are supported the rolls D, E, and F, the rolls D andEbeing arranged in a near-ly horizontal plane, and the roll F in a vertical plane passing between 'the rolls D and E; and these rolls D, E, andF are journaled in adjust-able bearings d, d', and f, in order that they maybe adjusted-the former toward the roll E and the latter toward the roll D-by means of the eccentric lever f' and regulating screw f A suitable doctor "or scraper, G, is Secured adjustably in proximity to each of the rolls. The rolls B andO are ridgechtoothed, or provided with diamondshaped projections, in order to act 'as graters or disintegrators, and by a suitable train of gearing, hereinafter described, are driven at speeds differing in each. The relative rotation of each roll in the entire apparatus is by said train of gearing caused to differ from all the others-that is to say, I prefer (but do not limit 7@ myself to any exact difference in the relative speeds of rotation of the rolls) that the roll B shall rota-te about six times as fast as roll G, roll D about twice as fast as roll E, and roll F about five times as fast as roll D, while the relative speeds of rolls B and G to that of rolls D, E, and F are governed in their relative rapidity in accordance with the amount of the product passing therefrom to the rolls D E, and this amount should not be in excess of that which the latter can properly treat, as hereinafter described. Each pair of rolls is rotated in such direction as will feed material down through or between them. Material placed in the hopper rdes over the roll Cand strkes the-roll B, the rotation of which,being faster, and at its upper portion, toward the roll G, acts to draw the material down between them, and in passing through it is broken and bruised or commiuuted into fine pieces; and in materials of the character above mentioned, adhering particles which fall upon the relatively slower roll E and come into contact with its faster conpanion D are again ground into a thin sheet, which is carried between the roll D and its faster companion F, where a further division of the sheet is accomplished, and it is finally arrested by the last scraper and falls within the box At By means of the swinging bolts a, pivoted IOO at a to the main frame, and provided with thumb-nuts & the hopper and its rolls B O may be removed (by first swinging the bolts and nuts off the top of frame A') and thoroughly cleaned, and the erushed material may then be subjected to repeated treatnents of or by the rolls D E F, each treatment increasing the fineness of texture and honogeneity.

H H represent gages or ehutes located over and between the rolls D E, for the purpose of preventing the spreading of the material beyond the ends of the rolls, and by means of rods or screws 7,attached thereto, each gage is rendered adjustable, in order to determine the width of the sheet to be formed by the rolls.

Although I have shown one tra-in of gearing, I do not wish to be limited to its exact arrangement, but deem any arrangement within the skill of a competent mechanie as amatter of choice. In this instance the shaft E' of roll E is made the power-shaft, and by means of a gear, 13 thereon drives a pinion, 13 of the shaft B' of roll B. Upon the opposite end of the shaft E' is another gear, E, which meshes with a gear, D, 011 the shaft D of the roll D. On the same shaft, and inside of gear D is a gear, D which drives a pinion, F on the shaft F' of roll F. These gears are of relative sizes to produce the desired relative speeds of rotation of the rolls, as described. The roll D may be chambered and provided with a hollow shaft to receive stean and keep gree of heat. By the above-describedarrangement of rolls the passage of material through them and its condition can be easily seen and followed by the attendant, and all clogging or imperfect grinding be prevented.

Having described my invention and its operation, what I claim as new is- 1. The combination of the hopper A, the corrugated feed or grating rolls B O, arranged at an incline within the delivery-opening of said hopper, frame A', the smooth rolls D, E, and F, a separate frame, A therefor, and means for removably securing said frames together, substantially as and for the purpose described.

2. The conibination of the frame A, the frame A', provided with the hopper A, and the feed or grating rolls B O, arranged at an incline within the delivery-opening of said hopper, with the sniooth rolls D and E, arranged in nearly the same horizontal plane, the roll F, below and between the rolls D and E, and means for rotating each of said rolls at a diiferent speed froni that of the others, substantially as specified.

In testimony whereof I affiX my signature in presence of two witnesses.

JAMES BARREBA RIVERA.

WVitnesses:

THoMAs A. WHELAN, MURRAY HANSON. 

